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CSV / JSON / Excel to Field report

Data Preview and Field Detector

Inspect field types, empty cells, mixed values, and chart readiness. UChartX adds field profile cards, completeness checks, and suggested fixes, then lets you audit and export the result.

  1. 1Upload DataPaste, upload, or load a sample
  2. 2Check & DescribeReview fields and data quality
  3. 3VisualizeChoose and refine the chart
  4. 4Publish & ExportCheck context and download
Chart ready

Loaded sample: Website traffic by channel as CSV

Data converter5 rows96/100 score
Browser-side processingNo account requiredUse small, non-sensitive datasets

Steps 1-2

Upload and check data

CSV or pasted tableUse a header row followed by one row per item. Commas, tabs, and copied spreadsheet rows are accepted.Month,Revenue Jan,12400 Feb,13850
Field inspectorOverride a type when the automatic detection is wrong.
5rows
3fields
100%filled
0issues
5 parsed row(s)

Website traffic by channel gives Data Preview and Field Detector a different data shape for checking recommendations, controls, and exports.

Step 3

Visualize

Preview: Auto

Exports use report 1200x800 with the current title, source note, chart view, and watermark.

Chart viewChoose a view for this preview.

Auto: Use the best default for the current page and detected fields.

uchartx.com

Publish & Export checksTitle readySource note readyAuto preview selected
Channel: categorySessions: numberConversions: percent
Input shapeCSV / JSON / Excel

checking data before chart creation

What this page addsfield profile cards, completeness checks, and suggested fixes

Inspect field types, empty cells, mixed values, and chart readiness.

Export decisionField report / Clean table

Avoid this workflow for database-scale profiling or regulated datasets.

Use case

Data Preview and Field Detector workflow

Data Preview and Field Detector is for checking data before chart creation. It works with traffic channels, acquisition mix, and conversion signals, adds field profile cards, completeness checks, and suggested fixes, and keeps the preview, checks, and exports tied to the data you entered.

From input to export

  1. Start with the traffic sample or paste your own CSV, JSON, Excel data.
  2. Treat the score as a checklist, not a final approval.
  3. Apply the specific fixes before exporting or publishing.
  4. Export Field report, Clean table after the checks explain any remaining context or readability issues.

When to use

  • Use Data Preview and Field Detector when you need to find problems before a chart is published.
  • It is a good fit for checking data before chart creation.
  • It works best when your data resembles traffic channels, acquisition mix, and conversion signals.

When not to use

  • Do not use this workflow for database-scale profiling or regulated datasets.
  • Do not publish the result until title, unit, source, and export size have been reviewed.
  • Use another chart preview when the recommendations explain a better fit.

Controls that matter

  • Use the score panel to identify the next fix.
  • Apply safe fixes such as source note, Top N, or chart switch.
  • Export the audit summary after review.

Input and method

  • The parser normalizes rows into a browser-side table and never requires an account.
  • Field detection classifies traffic channels, acquisition mix, and conversion signals into number, date, category, or text fields.
  • The chart logic checks audit fit against the detected fields and the current page task.
  • The score combines data readiness, field mapping, chart fit, labels, accessibility, and field report export readiness.

Checks before export

  • Exporting the score without acting on the listed issues.
  • Exporting before adding a clear title, unit, or source note.
  • Ignoring the page limit: this workflow is not intended for database-scale profiling or regulated datasets.
  • Treating the score as approval instead of reviewing the specific fixes.

Export options

  • PNG and SVG exports use the current field report preview and selected size.
  • Markdown and mini report exports include title, source note, detected fields, score, and fixes.
  • HTML, JSON config, clean CSV, and alt text are available from the secondary export panel when data is valid.

Output limits

  • Very large datasets should be summarized before using this browser-side tool.
  • Avoid this workflow for database-scale profiling or regulated datasets.
  • Image-only chart recognition, cloud storage, and collaborative editing are not part of this version.
  • Generated summaries should be reviewed before publication.

Related tools

CSV to Chartdelimiter detection, field typing, and CSV issue checksExcel to Chartsheet selection, header detection, and multi-sheet warningsJSON to Chartnested key flattening and JSON path-friendly preview

FAQ

What data works best with Data Preview and Field Detector?

Data Preview and Field Detector works best with clean traffic channels, acquisition mix, and conversion signals that includes headers and enough rows to find problems before a chart is published.

What should I check after import?

Confirm headers, field types, row count, and whether nested or copied values were flattened as expected.

Does UChartX upload my data?

Core chart creation runs in the browser. Avoid pasting private or regulated datasets into any web tool.

Can I export from Data Preview and Field Detector?

Yes. This page supports the relevant export options listed for the tool: Field report, Clean table.